Illustration 4. Foundation systems.
(a) slab-on-grade may be sufficient for a relatively level parcel; (b) a crawl space may be required; or (c) a post-and pier may be required for sloped land.
(a) slab-on-grade may be sufficient for a relatively level parcel; (b) a crawl space may be required; or (c) a post-and pier may be required for sloped land.